121221331223230 has 128 divisors (see below), whose sum is σ = 260207482945536. Its totient is φ = 39785136768000.

The previous prime is 121221331223207. The next prime is 121221331223269. The reversal of 121221331223230 is 32322133122121.

It is a super-2 number, since 2×121221331223230² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 232717554 + ... + 233237866.

It is an arithmetic number, because the mean of its divisors is an integer number (2032870960512).

Almost surely, 2^{121221331223230} is an apocalyptic number.

121221331223230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221331223230 is an abundant number, since it is smaller than the sum of its proper divisors (138986151722306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121221331223230 is a wasteful number, since it uses less digits than its factorization.

121221331223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521522.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 121221331223230 its reverse (32322133122121), we get a palindrome (153543464345351).

The spelling of 121221331223230 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, three hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty".